If your browser is rigged to play midi files, you can click on the
speaker icons to hear a crude version of the tune.

Because this round is so complex, separate image and sound files are provided
for each part. The first two images are for four of the six voices.

The first line for four voices:

The second line for four voices:

Now, you can listen to the first two lines put together.

This is the "ground", which should be sung by the two lowest voices:

The instructions in the manuscript are quite clear: four of the voices are to
cycle through the lines in the first two images while the two lowest voices
cycle through the line in the third image. If you have more than six voices,
you can make this round even fancier by altering these instructions: the round
sounds terrific if you have four voices cycling through the verse in the first
image, two cycling through the verse in the third image, and additional voices
singing the section in the middle as a separate part. That's how the full
soundclip is set up.